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arXiv · 1509.02091

Modulation of attosecond beating by resonant two-photon transition

Álvaro Jiménez Galán·Luca Argenti·Fernando Martín
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Abstract

We present an analytical model that characterizes two-photon transitions in the presence of autoionising states. We applied this model to interpret resonant RABITT spectra, and show that, as a harmonic traverses a resonance, the phase of the sideband beating significantly varies with photon energy. This phase variation is generally very different from the $\pi$ jump observed in previous works, in which the direct path contribution was negligible. We illustrate the possible phase profiles arising in resonant two-photon transitions with an intuitive geometrical representation.

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Álvaro Jiménez Galán, Luca Argenti, Fernando Martín. 2015-09-07. Modulation of attosecond beating by resonant two-photon transition. https://doi.org/10.1088/1742-6596/635/1/012005

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